Teigen took to Twitter on Tuesday evening to share a video of her mom, who's originally from Thailand, reciting the pledge of allegiance. In the clip, Vilailuck can be seen holding her two-year-old granddaughter, Luna, who's waving an American flag in honor of her grandmother's accomplishment. "YES MOM!! Congrats @pepperthai2!!" the cookbook author captioned the post. John Legend also celebrated his mother-in-law's big day, sharing the video to his own feed and adding, "@Pepperthai2 became a US citizen today! 100% on her test!"

The congratulatory comments flowed in. "I got my citizenship last year, congrats to your mom!!!!" wrote one Twitter user. "That is really, really beautiful. Congratulations!!! I'm told that test is quite hard and that anyone born here would probably fail it so good on ya!! To hold your beautiful granddaughter while being sworn in is divine. Blessings!" added another.

Vilailuck lives with Teigen and Legend in Los Angeles, and is a constant fixture on her daughter's feed. She also has her own iconic Instagram account—@pepperthai2—and has become an IG legend (pun very much intended) in her own right. She's a doting grandmother and recipe whiz, and was one of the first guests on Luna's hilarious YouTube channel.

Chrissy opened up to PopSugar earlier this year about the joys of having her mom live with her, and it's safe to say that it sounds like the Teigen-Legend household is a nonstop, love-filled party thanks to Vilailuck's constant presence. "It's so helpful to have her live with us. She's the most incredible grandma. Luna is so close with her. Yāy means grandmother in Thai, so she goes 'Yāy!' all day long, and it's just fun because my mom is a kid at heart. She just has so much energy, and I just lug myself at this point," she said. "She somehow manages to squeeze Luna in and make her a priority. It's crazy. There's nothing wrong with having too much love. Luna has a lot of love around her."